I hear you!
Because I tend to be a cheapskate, I hate it when games (claiming you can ALWAYS play for free, once you buy the initial game) are designed in such a way that there are — in essence — virtual paywalls, in the sense that it becomes all but impossible to progress beyond a certain point unless you buy some upgrade that just "happens to be on amazing sale right now for $19.95, and if you order two, we'll send you this AMAZING 99pc tool set for absolutely FREE! Just add $29.95 for shipping and handling..."
Wait... WHAT?